Can the files managed in Huawei Glory 3c mobile phone be deleted?

If it comes with your mobile phone, you must make sure that you have permission for it.

If not, you must get it.

Install application software on the computer and back up the data on the mobile phone.

Back up the data on your mobile phone to your computer at any time.

Then use Kingroot settings to get the latest permissions.

Then file on the mobile phone, and it will be fine at the beginning of the mountain.